Sexual reproduction involves the fusion of male and female gametes (sperm and egg) forming a zygote. Asexual reproduction does not involve gametes and can occur through mitosis, fission, budding, or parthenogenesis. Most animals reproduce sexually but some can reproduce asexually. Sexual reproduction has internal cycles and is controlled by hormones in response to environmental cues like seasons. Fertilization can be internal or external. Reproductive organs like ovaries, uterus, testes produce gametes and support gestation and birth.
Welcome to the fascinating world of reproduction in animals! In this chapter, we delve into the essential processes that ensure the continuation of life. Reproduction, the biological phenomenon that gives rise to new generations, comes in various forms. From the simple and efficient asexual reproduction to the complex and diverse realm of sexual reproduction, animals have evolved unique strategies to perpetuate their species.
As we journey through this chapter, we'll explore the mechanisms of asexual reproduction, where a single parent can give rise to offspring with identical genetic traits. On the other hand, sexual reproduction involves the intricate dance between male and female gametes, contributing to the creation of offspring with a blend of characteristics from both parents.
Get ready to unravel the mysteries of the male and female reproductive systems, understand the significance of gametes, and explore the miraculous process of fertilization. Join us as we venture into the captivating world of reproduction in animals, where life's intricate tapestry is woven through the delicate threads of birth, growth, and continuity.
For more information, visit- www.vavaclasses.com
Molecular development biology. Fertilization is fusion not gametes or fusion of sperm and egg. The fusion not gametes to became a zygote. Types of fertilization divided into 2 categories such as internal and external fertilization. Internal fertilization is a the fusion of gametes occur in the inside the body. External fertilization is fusion not gametes occur in the out side of the body.
Welcome to the fascinating world of reproduction in animals! In this chapter, we delve into the essential processes that ensure the continuation of life. Reproduction, the biological phenomenon that gives rise to new generations, comes in various forms. From the simple and efficient asexual reproduction to the complex and diverse realm of sexual reproduction, animals have evolved unique strategies to perpetuate their species.
As we journey through this chapter, we'll explore the mechanisms of asexual reproduction, where a single parent can give rise to offspring with identical genetic traits. On the other hand, sexual reproduction involves the intricate dance between male and female gametes, contributing to the creation of offspring with a blend of characteristics from both parents.
Get ready to unravel the mysteries of the male and female reproductive systems, understand the significance of gametes, and explore the miraculous process of fertilization. Join us as we venture into the captivating world of reproduction in animals, where life's intricate tapestry is woven through the delicate threads of birth, growth, and continuity.
For more information, visit- www.vavaclasses.com
Molecular development biology. Fertilization is fusion not gametes or fusion of sperm and egg. The fusion not gametes to became a zygote. Types of fertilization divided into 2 categories such as internal and external fertilization. Internal fertilization is a the fusion of gametes occur in the inside the body. External fertilization is fusion not gametes occur in the out side of the body.
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A Strategic Approach: GenAI in EducationPeter Windle
Artificial Intelligence (AI) technologies such as Generative AI, Image Generators and Large Language Models have had a dramatic impact on teaching, learning and assessment over the past 18 months. The most immediate threat AI posed was to Academic Integrity with Higher Education Institutes (HEIs) focusing their efforts on combating the use of GenAI in assessment. Guidelines were developed for staff and students, policies put in place too. Innovative educators have forged paths in the use of Generative AI for teaching, learning and assessments leading to pockets of transformation springing up across HEIs, often with little or no top-down guidance, support or direction.
This Gasta posits a strategic approach to integrating AI into HEIs to prepare staff, students and the curriculum for an evolving world and workplace. We will highlight the advantages of working with these technologies beyond the realm of teaching, learning and assessment by considering prompt engineering skills, industry impact, curriculum changes, and the need for staff upskilling. In contrast, not engaging strategically with Generative AI poses risks, including falling behind peers, missed opportunities and failing to ensure our graduates remain employable. The rapid evolution of AI technologies necessitates a proactive and strategic approach if we are to remain relevant.
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Macroeconomics- Movie Location
This will be used as part of your Personal Professional Portfolio once graded.
Objective:
Prepare a presentation or a paper using research, basic comparative analysis, data organization and application of economic information. You will make an informed assessment of an economic climate outside of the United States to accomplish an entertainment industry objective.
The French Revolution, which began in 1789, was a period of radical social and political upheaval in France. It marked the decline of absolute monarchies, the rise of secular and democratic republics, and the eventual rise of Napoleon Bonaparte. This revolutionary period is crucial in understanding the transition from feudalism to modernity in Europe.
For more information, visit-www.vavaclasses.com
Synthetic Fiber Construction in lab .pptxPavel ( NSTU)
Synthetic fiber production is a fascinating and complex field that blends chemistry, engineering, and environmental science. By understanding these aspects, students can gain a comprehensive view of synthetic fiber production, its impact on society and the environment, and the potential for future innovations. Synthetic fibers play a crucial role in modern society, impacting various aspects of daily life, industry, and the environment. ynthetic fibers are integral to modern life, offering a range of benefits from cost-effectiveness and versatility to innovative applications and performance characteristics. While they pose environmental challenges, ongoing research and development aim to create more sustainable and eco-friendly alternatives. Understanding the importance of synthetic fibers helps in appreciating their role in the economy, industry, and daily life, while also emphasizing the need for sustainable practices and innovation.
2. Asexual vs. Sexual Reproduction
⚫ In sexual reproduction, the fusion of haploid
gametes forms a diploid cell, the zygote. The
animal that develops from a zygote can in turn
give rise to gametes by meiosis. The female
gamete, the egg, is a large, nonmotile cell. The
male gamete, the sperm, is generally a much
smaller, motile cell.
⚫ Asexual reproduction is the generation of new
individuals without the fusion of egg and sperm.
In most asexual animals, reproduction relies
entirely on mitotic cell division.
3. ⚫ Many invertebrates can reproduce asexually
by fission, the separation of a parent
organism into two individuals of
approximately equal size.
⚫ Also common among invertebrates is
budding, in which new individuals arise from
outgrowths of existing ones.
◦ Ex. In certain species of coral and hydra, new
individuals grow out from the parents body.
⚫ Parthenogenesis is a form of asexual
reproduction in which an egg develops
without being fertilized.
Asexual Reproduction
5. ⚫ The vast majority of eukaryotic species
reproduce sexually.
⚫ Most animals exhibit cycles in reproductive
activity, often related to changing seasons. In
this way, animals conserve
resources, reproducing only when sufficient
energy sources are available and when
environmental conditions favor the survival of
offspring.
◦ For example, ewes (female sheep) have a reproductive
cycle lasting 15-17 days.
⚫ Ovulation is the release of mature eggs and
occurs at the midpoint of each cycle.
⚫ Reproductive cycles are controlled by
hormones, which in turn are regulated by
environmental cues.
◦ Common environmental cues are changes in day
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fall, and lunar cycles.
7. ⚫Hermaphrodism is when each
individual has both male and female
reproductive systems. Because each
hermaphrodite produces as both male
and female, any two individuals can
mate.
◦ This is present in stationary animals, such as
barnacles, burrowing animals, such as clams,
and some parasites, such as tapeworms.
Sexual Reproduction Continued
8. ⚫Fertilization is the union of sperm and
egg, which can be either external or
internal.
⚫External fertilization – the female
releases eggs into the
environment, where the male fertilizes
them
⚫Internal fertilization – sperm are
deposited in or near the female
reproductive tract, and fertilization occurs
within the tract
External vs. Internal Fertilization
10. ⚫In many insect species, the female
reproductive system includes a
spermatheca, a sac in which sperm may
be stored for extended periods, a year or
more in some species.
⚫In many nonmammalian vertebrates, the
digestive, excretory, and reproductive
systems have a common opening to the
outside, the cloaca.
Reproductive Organs
11. ⚫Ovaries – the female gonads are a pair of
ovaries that border the uterus and are
held in place in the abdominal cavity by
ligaments (ovaries produce eggs and
reproductive hormones)
⚫Uterus – where eggs are fertilized and
development of the young occurs
Female Reproductive Organs
13. ⚫Testes – consists of many highly coiled
tubes surrounded by several layers of
connective tissue, this is where the sperm
is formed
Male Reproductive Organs
17. ⚫ Human gestation is divided into three
trimesters of about three months each.
◦ First, Second, and Third Trimester
⚫ Placenta – a structure in the pregnant uterus
for nourishing a viviparous fetus with
mother’s blood supply; formed from the
uterine lining and embryonic membranes
⚫ Labor – the process by which childbirth
occurs; a series of strong, rhythmic uterine
contractions
⚫ Of course, protection is always an option ;)
Conception and Birth